package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.mapper.EmployeeMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {
    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private DishService dishService;
    /**
     * 新增菜品，同时保存对应的口味数据
     * @param dishDto
     */
    @Transactional
    @Override
    public void saveWithFlovar(DishDto dishDto) {
        //保存菜品的基本信息到菜品表dish
        this.save(dishDto);
        Long id = dishDto.getId();//菜品id
        List<DishFlavor> flavors = dishDto.getFlavors();

        for (DishFlavor flavor : flavors) {
            flavor.setDishId(id);
        }
        //保存菜品口味数据到菜品口味表dish_flavor
        dishFlavorService.saveBatch(dishDto.getFlavors());
    }

    @Override
    public DishDto getWithId(Long id) {
        //查询菜品基本信息
        Dish dish = this.getById(id);
        DishDto dishDto=new DishDto();
        BeanUtils.copyProperties(dish,dishDto);
        LambdaQueryWrapper<DishFlavor> dishFlavorLambdaQueryWrapper=new LambdaQueryWrapper<>();
        dishFlavorLambdaQueryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> list = dishFlavorService.list(dishFlavorLambdaQueryWrapper);
        dishDto.setFlavors(list);
        return dishDto;
    }

    @Override
    @Transactional
    public void updteWithFlovar(DishDto dishDto) {
       //更新dish表基本信息
        this.updateById(dishDto);
        //清理当前菜品对应口味数据
        LambdaQueryWrapper<DishFlavor> dishFlavorLambdaQueryWrapper=new LambdaQueryWrapper<>();
        dishFlavorLambdaQueryWrapper.eq(DishFlavor::getDishId,dishDto.getId());
        dishFlavorService.remove(dishFlavorLambdaQueryWrapper);
        //添加当前口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item) -> {
            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);
    }
}
